Is it possible to get one of the child node get selected programatically

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Hi all, I would like to select one of the child node of my treeview get selected programatically. My treeview is as follow at run time
      Root
       |-A.txt(I would like to select this node after doing some iteration in my application)
         |-Child(Even if i select this node and do some operations i would like toselect the above one only like that if n number of child nodes exists i would like to select the node that was with .txt extension)

I write my code as follows it works fine but for the last node which has no sub nodes it is not working fine can any modify this and give

C#

if (tvwACH.Nodes.Count != 0)
                {
                   // tvwACH.ExpandAll();
                    TreeNode tn;
                    tn = tvwACH.Nodes[0];
                    tvwACH.ExpandAll();
                    if  (tn.Nodes.Count != 0)
                    {
                        tn = tn.Nodes[0];
                    }
                    if (tn.Tag.ToString() == "3")
                    {
                        if (tvwACH.SelectedNode.Parent != null)
                        {
                            tn.Parent.Expand();
                            tvwACH.SelectedNode = tn;
                        }
                    }
                   }

My treeview is as follows

Root
            |->Some.txt
                |->CHild
                  |->Child1
                    |->Child2(After this i am unable to select the one i required

Any idea please

Posted 3-Oct-10 21:36pm

demouser743

Updated 3-Oct-10 22:47pm

v2

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demouser743 4-Oct-10 11:59am

can any one help me please i got struck at this point in my application

2 solutions

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ely_bob · Answer 1 · 2010-10-04T08:29:00

You should do this using recursion.. it become much simpler

C#

bool Select_It(string str, TreeView tvwParent, TreeNode tN)
{
    if (tN.Text == str)
    { tvwParent.SelectedNode = tN; return true; }
    foreach (TreeNode child in tN.Nodes)
    {
        if (Select_It(str, tvwParent, tN)) { return true; }
    }
    return false;
}




bool Select_It_By_Tag_Value(string str, TreeView tvwParent, TreeNode tN)
{
    if (tN.Tag.ToString() == str)
    { tvwParent.SelectedNode = tN; return true; }
    foreach (TreeNode child in tN.Nodes)
    {
        if (Select_It(str, tvwParent, tN)) { return true; }
    }
    return false;
}

//then use:
void select_node()
{
    if (Select_It_By_Tag_Value("3", tvwACH, tvwACH.Nodes[0]))
    {
        //value exists
    }
    else
    {
        // value not in tree
    }
}

demouser743 · Answer 2 · 2010-10-05T23:08:00

I got the answer

C#

TreeNode TvNode = tvwACH.SelectedNode.Parent;
           while (TvNode != null)
           {
               if (TvNode.Text.EndsWith(".txt", true, System.Globalization.CultureInfo.InvariantCulture))
               {
                   tvwACH.SelectedNode = TvNode;
                   TvNode = null;
               }
               else
                   TvNode = TvNode.Parent;
           }

Is it possible to get one of the child node get selected programatically

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